Electrical switch



May 26,1925.

C. C. SCHREIL ELECTRICAL SWITCH Filed Jan. 29, 1924 l/VVE/VTOR Cfl/IRLES 0- Jones.

A TTOR Patented May 26, 1925.

UNITED STATES CHARLES C. SCHREIL, OF CHICAGO, ILLINOIS.

ELECTRICAL SWITCH.

Application filed January 29, 1924. Serial No. 689,220.

To all whom it may concern:

Be it known that I, CHARLES C. SOI-IREEL,

a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in an Electrical Switch, of which the following is a description, reference being had to the accompanying drawing, and to the figures of reference marked thereon.

This invention relates to a push button switch particularly adapted for mounting in the steering post of an automotive vehicle, although it will be understood that the switch is adapted for other purposes for controlling an electric circuit. 7 It is the principal object of my inventio to provide a switch which is extremely simple in construction, easy to assemble and disassemble and one that is capable of carrying considerable current without detriment to its parts.

My invention will be clearly understood by reference to the attached drawing, wherein:

Figure 1 is a sectional view through the switch on the line 1/1 of Fig. 2, but with the body of the switch in position.

Figure 2 is a view of the cap as removed from the body of the switch.

Figure 3 is a view of the top of the body portion of the switch; while Figure 4 is a complete assembled view.

In the drawings, 1 illustrates the body of the switch made of suitable insulating material. The body part has a bore of two diameters, the larger of which contains a stationary contact 3 having an end projecting through the smaller bore to the exterior part of the body 1. 'A screw 16 is threaded into the member 3 for the purpose of making a conductor attachment thereto. Positioned in the upper part of the bore of larger di ameter is a contact member 7, which is fastened to the cap 2 through the medium of a screw 10. The cap 2 preferably has a strengthening plate 4 moulded, or otherwise fastened therein. The upper part of the member 7 is shouldered and around this shoulder is seated a metallic member 11, whichis U-shaped, having arms 5 and 6 extending down the opposite sides of the body- 1, lying in the channels 13 and 1 1, the body portion 11 resting in the cross channel 15. A screw 12 passes through one of the arms, for example 6, into the body 1, thereby holding the switch parts in operative position. The arm 5 may be sprung out slightly so as to make a sliding contact engagement with the inside wall of the metallic steering post, thereby completing a connection from the contact 3 through the member 7 and the member 11, when the cap 2 is actuated. The member 7 is counterbored to receive .a spring 8 and an insulator 9, which in the normal position of the cap projects slightly into the counterbore in order that it may be held in position. The spring 8, as shown in Fig. 1, rests on the insulator 9 so as to prevent the spring from making contact with the member 3.

The relatively large diameter of the member 7 and its fit in the larger bore of the body is such as to insure a longitudinal operation of the movable parts of the switch, bringing the entire surface of the end of the contact member 7 into engagement with the stationary contact member 3. It is seen from Fig. 1 that these members are of considerable size and consequently can carry considerable current, which does not pass through the spring and thereby its spring action is unaffected.

While I have shown the preferred form of my switch it will be apparent that the details are susceptible of certain changes without departing from the spirit of my invention and the scope of the appended claims.

Having thus described my invention, what I claim is:

1. In a device of the class described, a body portion of insulating material having a bore in two diameters, a terminal plate positioned in the bottom of thelarger bore and having a threaded part extending through the smaller bore to the exterior of the body with means for attaching a conductor thereto, a contact member fitting into said larger bore above the said terminal and having a bore therein and a reduced portion extending outward from the body, a spring positioned in the bore of the contact member and extending toward the terminal plate, an insulator positioned between the spring and said plate, a cap fastened to the contact member and having a recess extending over said body portion, a yoke fitting over the reduced portion of said contact member and fastened to the outer part of said body for the purpose described.

2. In a device of the class described, a

body portion of insulating material having a bore in two diameters, a terminal plate positioned in the bottom of the larger bore and having a threaded part extending through the smaller bore tothe exterior of the body with means for attaching a conductor thereto, said body having a channel across the top and two vertical channels substantially opposite each other, a contact membe fitting into sa d la g r bo e ov the said terminal and having a bore therein and a rednced portion extending outward fr the h j yi a spr ng ticned in the 9 m 01? cqn aci member antlente ding'to ward the terminal plate, an insulator positio d b twe n h pr n w n Pl a cap fastened to the contact member and having a recess extending ove ai b dy portion, a Ll-shaped member having its body part litting in t e oss channel-cf body and over the reduced portionjofsaid contact member and having its arms fitting in the ventical channels, and means for fastening at least one of the a ms of the U-l shaped member to the side of the body.

3. In a device of the class described, a cylindrically shaped body of insulating mate,- rial having a bore in the bottom of which is securely positioned a flat terminal plate with a contact connection on the ecvterio of the body, a n a t mem er posit o ed iii a d bore and substantially filling-the same, but adapted for longitudinal movement therein, a spring and an insulator positioned on said plate and normally ertenc ling slightly into said contact member, said spri g serving to normally hold the contact member out of electrical contact with said plate, a yoke fastened to the exterior surface of the body and fitting over the Contact member to hold it operative position, and a push cap fastened to said contact member.

e In de of th class des r ed, n ylindrically shaped body of insulating mate,- rial having a bore in the bottom of which is e u ely posi ioned a term na plat ith a Contact connection on the exterior. o t e body, a contact member positioned in said bore for longitudinal movement therein, said contact member having a bore and a screw in the bottom extending through into a push cap, a spring seated in the bore of the contact member, an insulator of smaller diam said spring o an s vi g to keep the spring out of contact with said ter; inal plates, said spring serving to nor- Ina-1y hold the contact member out of electrical contact with said plate, a yoke fastened to the exterior surface of the body and fitting over the contact n'iember to hold it in operative position, and a push cap fastened to said contact member.

5. In a device of the class described, means for insuring the longitudinal operation of the movable Contact member consisting of a body member having a central bore with a stationary terminal in the bottom thereof, said movable contact closely fitting the bore in the body and having a central bore itself, with a spring and an insulator in said bore, said insulator serving to hold the spring out of contact with the'stationary contact and means for holding the moving Contact, spring and nsulato n lace comp s ng a yoke member engaging the outer part Of the movable contactand having fastening means on the outer surface of the body.

6. In a deV iGe of the class'describ'ed,,a body .of inSlilating material, stationary terminal and movable contact arranged in tandem on the interior of the body; a spring tending to separate the movable member from the stationary member, and an insulator for preventing the springffrom contacting with both members, saidinsuiator being held in position by said movable member, a yoke fitted over the outer portion of the movable contact and attached to th terior of the body for holding the contact member in position, and a push. cap fastened to the movable contact. i

7. In a device of the class described, a body of insulating material, a stationary terminal and a movable contact arranged in tande O he. int rim 0 the b dy, .21 spri g tendi g; o sepa th m vabl membe from the stationary 'member, and an insh lator for preventing the spring from contacting with both members, said body having a pair- 'of vertical channels and a channel'across its top, a U-shaped member having its body part in the cross channel and fitti g around the outer end 01" th m able contact member, and its arms in the vertical channels with means for fastening at l as one of the ar n its cha ne nd a push cap fastened to the outer end of the contact member. I

8. In a device of the class described, a body of insulating material, a stationary terminal. and a mvoa-ble contact arranged in tandem on the interior of the body, a spring tending to separate the n' ovable member from the stationary member, and an insulator for preventing the spring from contacting with both members, a yoke slidably fitting ver the outer portion of the movable contact, but in good electrical engagement therewith, and having its arms extending to the exterior of the body, at least one of said arms being permanently fastened to the body, and a push cap having a metal plate in contact with said contact member.

In testimony whereof, I afiii; my signatute- CHARLES C. sSCl-IREIL. 

